Spring Boot 3

In a Spring Boot application, managing HTTP requests and responses is critical for implementing cross-cutting concerns such as logging, security, and authentication. Interceptors and Filters provide two key mechanisms for this purpose. Additionally, you might need to specify the order in which these interceptors and filters are executed to ensure the correct flow of operations. In this post, we’ll walk through how to create both a custom Interceptor and a custom Filter in Spring Boot, and how to define the order in which they should be executed....

Introduction In modern applications, messaging systems play a crucial role in enabling communication between different components and services. Apache ActiveMQ Artemis is a popular open-source messaging broker that supports multiple protocols, including AMQP. In this blog post, we will explore how to connect a Spring Boot 3 application to an Apache ActiveMQ Artemis broker using the AMQP protocol and configure it to support transactions. Prerequisites Before we begin, ensure you have the following:...

Spring Boot provides several robust options for consuming RESTful web services. In this blog post, we will explore three primary methods: RestTemplate, WebClient, and Feign Client. Each approach offers unique features and benefits suited for different use cases. 1. RestTemplate Description: RestTemplate is a synchronous client for performing HTTP requests. It is simple to use and ideal for applications where synchronous calls are sufficient. Setup and Usage: Add Dependency: To use RestTemplate, add the following dependency to your pom....

Configuring asynchronous processing in a Spring Boot REST application allows you to handle requests without blocking the main thread, improving performance and responsiveness. Here’s a step-by-step guide to enable and configure asynchronous processing in your Spring Boot REST application: 1. Enable Async Support First, enable asynchronous processing by adding the @EnableAsync annotation to your Spring Boot application class or any other configuration class. import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.scheduling.annotation.EnableAsync; @SpringBootApplication @EnableAsync public class AsyncApplication { public static void main(String[] args) { SpringApplication....

Internationalization (i18n) in Spring Boot with Thymeleaf allows you to create web applications that can support multiple languages. This involves setting up message resource files for different languages and configuring your application to use them. Here’s a step-by-step guide to set up i18n in a Spring Boot application using Thymeleaf: Step 1: Add Dependencies Ensure you have the necessary dependencies in your pom.xml: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> Step 2: Create Message Resource Files Create message resource files for each language you want to support....

Handling exceptions gracefully in a Spring Boot 3 REST application is crucial for providing clear and consistent error responses to the clients. In this section, we’ll explore how to handle exceptions for REST controllers using @ControllerAdvice and @ExceptionHandler annotations, and customize error responses. Setting Up the Project Ensure you have the necessary dependencies in your pom.xml: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> Step 1: Create a Custom Exception Define a custom exception that can be thrown by your REST controllers:...

In modern web applications, providing clear and user-friendly error messages is crucial for a good user experience. In this blog post, we’ll explore how to customize error handling in a Spring Boot 3 application using Thymeleaf. We’ll look at how to create custom error attributes, define a global error controller, and design a custom error page with Thymeleaf. Setting Up the Project First, ensure your Spring Boot 3 project is set up with the necessary dependencies....

Thymeleaf is a modern server-side Java template engine for web and standalone environments. It is particularly well-suited for Spring Boot applications, offering a natural way to create dynamic web pages. In this blog post, we’ll explore how to integrate Thymeleaf with Spring Boot, create dynamic templates, and use Thymeleaf’s powerful features to build a simple web application. Setting Up Thymeleaf with Spring Boot Step 1: Create a Spring Boot Project Start by creating a new Spring Boot project using Spring Initializr or your preferred method....

Spring Boot Devtools is a powerful tool that significantly improves the development experience by providing features like automatic restarts, live reload, and configurations that are optimized for development. In this blog post, we’ll explore how to set up and use Spring Boot Devtools to speed up your development workflow. Why Use Spring Boot Devtools? Spring Boot Devtools enhances the development process in several ways: Automatic Restarts: Automatically restarts your application whenever files on the classpath change, saving you the hassle of manually restarting the server....

In modern software development, containerization has become a key practice for ensuring consistent environments across different stages of development, testing, and deployment. Spring Boot 3 offers robust support for Docker Compose and Testcontainers, making it easier to manage multi-container applications and write comprehensive integration tests. This blog post will guide you through setting up Spring Boot 3 with Docker Compose, using custom container images, and leveraging Testcontainers for integration testing....